Re: On-disk kernel hanging after install

[Michael <macallan%netbsd.org@localhost>]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Hello,

On Apr 9, 2011, at 5:21 PM, Julio Merino wrote:

> Hello,
>
> I had a Mac Mini G4 1.2Ghz happily running NetBSD 5.1.  For some
> reason I'm not going to bother you with, I have had to reinstall OS X
> on the machine and now I am trying to get NetBSD back in, but this
> time shooting for a -current snapshot.
>
> I have built NetBSD-current today and the installer works just fine:
> "boot cd:,OFWBOOT.XCF;1" gets me into sysinst and everything works
> perfectly.  Note that I had to manually set up a pdisk similar to the
> following:
>
> #:                type name      length   base      ( size )
> 1: Apple_partition_map Apple         63 @ 1
> 2:           Apple_HFS Boot      204800 @ 64        (100.0M)
> 3:     Apple_UNIX_SVR2 Swap     2097152 @ 204864    (  1.0G) S1  SFS  
> k0  (swap)
> 4:     Apple_UNIX_SVR2 Root   153999472 @ 2302016   ( 73.4G) S0 RUFS  
> k0  /
>
> Then I copied ofwboot.xcf into the Boot partition (with hfsutils, but
> also tried from within the OS X installer).  The funny thing is the
> machine is unable to boot.  When it loads the on-disk kernel, it
> either freezes after "No ADB support present, assuming USB keyboard"
> or panics immediately afterwards.  (I'm using
> boot-device=hd:,\ofwboot.xcf and boot-file=netbsd , which are the
> exact same settings I had before the reinstall.)
>
> I have tried everything I could think of so far.  I "downgraded" the
> root partition from ffsv2 to ffsv1 with the same results, tried the
> ofwboot.xcf from the cd and from /usr/mdec, and I even tried putting
> the installer kernel as /netbsd on the root disk to see if things
> moved at all.  But the same problems pops over and over again.  The
> weirdest thing is the latter I mention: how come the exact same
> installer kernel boots just fine from the cd but panics from the hard
> disk?
>
> Any other ideas / tips?

You can just make an iso9660 image with only ofwboot.xcf in it, dd it  
to the first sectors of the disk, then disklabel it ( don't bother  
with pdisk, ofwboot.xcf knows how to find and read disklabels ). Make  
sure your partitions don't overwrite the iso. We should probably teach  
sysinst how to do that since this method should work on both old and  
new world macs.
A suitable iso is here: 
ftp://ftp.netbsd.org/pub/NetBSD/misc/macallan/macppc/ofwboot.iso

have fun
Michael

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.7 (Darwin)

iQEVAwUBTaEJTcpnzkX8Yg2nAQJI/wf/bniBJbULMDHI5oHtrLAGEl1YYoyERd8x
M569NRAFn7nVy8uQtvbDfNIXDwq+6uBUf1IlqPwPCzM/pQ/N6DIjqVV69dT8Sdue
q8N7RuWjLwy1UKc7ZYrIqwk+UXfaQl0w2gtyh/4vDakDdAOqJAZHl/rfYaUrxFoB
ycbPP/fuBg5osAcvB/lua/Rwl93AlXsuwSYk0ChxBpqr+yUEQqTW8OccbK09XBtN
BPp32GqVIq6im/oxMTKHA6zBPT2yhzMzzWJ+1JgLMkFpzWgHASFy/zFXhFm7EPj7
7XnhgOhOzDMlOx0on0lhW7OqKglUJDsx12sZrbsmGXtzipK9q2mvag==
=bCG7
-----END PGP SIGNATURE-----